Support coreLibraryDesugaring configuration

**Is your feature request related to a problem? Please describe.**
I noticed that when my module have dependency on `coreLibraryDesugaring(libs.tools.desugarJdkLibs)` then plugin doesn't even see it and in console there is no suggestion to remove it if it unused

**Describe the solution you'd like**
Support searching for this configuration usages

Start by locating the dependency-configuration scanning entry point and checking how `coreLibraryDesugaring(...)` is represented. Trace the existing unused-dependency suggestion path, then add coverage for a module using that configuration and verify that unused dependencies are reported appropriately.

Written by the indexing model from the issue text.